move target specs to rustc_codegen_spirv-types

Author: Firestar99

crates/rustc_codegen_spirv-types/src/lib.rs

@@ -5,6 +5,9 @@ pub use rspirv::spirv::Capability;
 mod compile_result;
 pub use compile_result::*;
 
+pub mod target_specs;
+pub use target_specs::TARGET_SPECS;
+
 // HACK(eddyb) allows downstream crates to access the correct version directly.
 pub use serde;
 pub use serde_json;